The document analyzes a study of 315 enterprises to identify challenges and best practices around closed-loop marketing. It finds that top performing organizations are improving metrics like conversion and return on marketing investments through closed-loop practices. Best-in-Class companies see 36% annual revenue growth, 26% return on marketing investment growth, and 21% conversion rate growth. They share characteristics like leveraging closed-loop processes/technologies (88%), analyzing customer behavior for segmentation (56%), and having documented processes to collect customer responses across functions (42%). To achieve Best-in-Class performance, companies must develop a robust customer database for closed-loop efforts and take a phased approach to closed-loop adoption.